The goal here is to lower the cost of global roaming, and that means they are aiming at the customers of WorldCell first and foremost here in the USA. While their pricing isn't lower than buying local SIM cards, they do save you money if you are going from country to country, and you avoid a lot of unused minutes. They also give you the benefit of one number so friends and family can find you, making it a great gift for the student you know whose going to take a trip overseas.